The Rise and Fall of the SDIO STTO Program: From the X-Rocket to Delta Clipper

Article

“The Rise and Fall of the SDIO STTO Program: From the X-Rocket to Delta Clipper” by Andrew Butrica
Published in Quest Volume: 29 #2 (2022)

Abstract

The following is an excerpt from a talk given by the author as part of NASA’s efforts to document the development of the X-33. The Strategic Defense Initiative Organization (SDIO) Single-Stage-To-Orbit (SSTO) Program was a predecessor to the X-33, even though two different agencies undertook the two programs.

Citation

Butrica, Andrew. “The Rise and Fall of the SDIO STTO Program: From the X-Rocket to Delta Clipper.” Quest: The History of Spaceflight Quarterly 29, no. 2 (2022): 52-58.